MD Helicopters MD Explorer - Fuel Pressure Switch Assembly; Fuel Pressure Switch Assembly Removal

CSP−900RMM−2MD Helicopters, Inc.
Rotorcraft Maintenance Manual
Page 437
Revision 24
28-00-00
(8). 902 CONFIG - Install tube fitting cap
(18). Torque tube fitting cap. Install
shroud box cap (17) and secure with
lockwire (C702).
(9). Lubricate O-ring (11) lightly with
grease (C109) and install on fuel
pressure switch assembly (12).
(10). Install fuel pressure switch assembly
(12) in fuel interconnect tee fitting (10).
Torque fuel pressure switch.
(11). Prepare vapor shroud box (9), vapor
shroud box cover assembly (2) surfaces
for electrical bonding (Ref. CSP-SPM).
Sealant, Electrically Conductive (C230)
(12). Apply sealant (C230) to faying surfaces
between vapor shroud box cover and
vapor shroud box and install vapor
shroud box cover assembly (2) with
bolts (14) and washers (13). Torque
bolts.
(13). Attach connector (1) and safety with
lockwire (C702).
(14). Install cabin and baggage compartment
floor panels AL165, AR165, A170,
A217, AL230, AR230, A235, AL250 as
required (Ref. Section 53-20-00).
(15). Perform fuel cell leak check/pressure
test (Ref. Section 28-00-00).
(16). Perform fuel supply vapor shroud leak
check/pressure test (Ref. Section
28-00-00).
(17). Close baggage compartment door L262
(Ref. Section 06-00-00).
(18). Fuel helicopter (Ref. Section 12-00-00).
17. Fuel Pressure Switch Assembly
A. Fuel Pressure Switch Assembly Removal
(Ref. Figure 414)
NOTE: This task is typical for LH and RH Fuel
Pressure Switch removal.
Aviation Turbine Fuel
(1). Defuel helicopter (Ref. Section
12-00-00).
(2). Open baggage compartment door L262
(Ref. Section 06-00-00).
(3). Remove baggage compartment floor
panels A235, AL250, AR250 as re
quired (Ref. Section 53-20-00).
(4). Remove and discard lockwire and
detach connector (1) from fuel pressure
switch assembly (12).
(5). Remove bolts (14) and washers (13)
from fuel interconnect vapor shroud
cover assembly (2) and let cover hang
from wire bundle.
 Residual Fluids
 System Contamination
(6). Remove pressure switch assembly (12)
with vapor shroud box cover (2) from
fuel interconnect tee fitting (10) and
discard O-ring (11).
(7). Remove silicone from back of connector.
Note color code and pin location
of wires when removing and
install in same order to prevent switch mal
function.
(8). Remove electrical pins from connector
with extraction tool (Ref. CSP-SPM,
Section 20-60-00).
CAUTION
CAUTION